﻿using System;
using System.Globalization;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace VocabInfrastructure.Converters
{
    public class Formatter :  IValueConverter
    {
        public Formatter()
        {
            Format = "{0}. ";
            BlankIfValueIsBlank = true;
        }

        public string Format { get; set; }
        public bool BlankIfValueIsBlank { get; set; }
        
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var s = (string) value;

            if(s != null)
            {
                s = s.Trim();
            }

            if (BlankIfValueIsBlank && string.IsNullOrEmpty(s))
            {
                return null;
            }

            return string.Format(Format, s);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}
